Added the DashboardLoadFragment
DashboardActivity uses the DashboardLoadFragment mockup
Extracted strings and size fixes in LoadFragment
Added a chart mockup
Loading the real chart in the DashboardLoadFragment
Replaced buttons with Spinners
Extracted executeLoadingChart method
Changes the chart dynamically according to the selected options
Replaced between the time and metric spinners
Forces loading the chart onResume
Set the dashboard ViewPager caching
Sets the rendered chart dimensions according to the screen dimensions
Merge branch 'load_charts'